Multiple faces of anxiety: a frontal lobe perspective

Area of Science:

• Neuroscience
• Psychiatry
• Comparative Psychology

Background:

• Anxiety disorders are linked to significant prefrontal cortex (PFC) and anterior cingulate cortex (ACC) dysregulation.
• Treatment success for anxiety disorders is variable, with approximately one-third of patients showing resistance.
• Understanding the neural basis of anxiety is crucial for improving therapeutic outcomes.

Purpose of the Study:

• To investigate how distinct patterns of frontal cortex dysregulation contribute to the varied clinical presentations and treatment responses in anxiety disorders.
• To explore the similarities in threat regulation mechanisms between humans and non-human primates within the frontal lobes.
• To integrate findings with the 'predatory imminence continuum' model and executive function theories of emotion regulation.

Main Methods:

• Review of existing human and non-human primate neuroimaging and clinical studies on anxiety disorders.
• Comparative analysis of functional organization in the frontal cortex related to threat processing.
• Theoretical integration of findings within established models of emotion and threat.

Main Results:

• Significant similarities exist in the functional organization of threat regulation across the frontal lobes in humans and non-human primates.
• Distinct forms of frontal cortex dysregulation may underlie different manifestations of anxiety.
• Executive functions play a core role in both the generation and regulation of emotional responses to threat.

Conclusions:

• Variability in treatment response for anxiety disorders may stem from diverse frontal cortex dysregulation patterns.
• The 'predatory imminence continuum' provides a useful framework for understanding frontal lobe function in threat regulation.
• Further research into specific frontal cortex circuits could lead to more personalized anxiety disorder treatments.